At which level should one cluster standard errors? What's good empirical practice? Have you ever heard about placebo regressions in this context? Here is a very useful guide that was recently published in the JoE doi.org/10.1016/j.jeco…. 🧵 with a short summary. #EconTwitter 1/9

Great thread by Ingar on how to use ChatGPT for research!

Up to date cluster robust! sciencedirect.com/science/articl…

The Rdatasets website now hosts over 2000 datasets in CSV format. All data are free and documented. Perfect for teaching or if you're just looking for some data to play with. vincentarelbundock.github.io/Rdatasets/inde… #RStats #StatsTwitter #EpiTwitter #EconTwitter #PolisciTwitter

Hi #EconTwitter! For economists interested in 𝐈𝐧𝐬𝐭𝐫𝐮𝐦𝐞𝐧𝐭𝐚𝐥 𝐕𝐚𝐫𝐢𝐚𝐛𝐥𝐞𝐬 estimation, here's a brand new Journal of Econometrics paper by M Keane and T Neal (UNSW), showing yet again how problematic 2SLS inference can be. A must-read for practitioners (and referees)!

On Tuesday in Oslo, I will give a talk on the potential and limits of human expertise. And, I will discuss how one of the largest funds in the world makes use of an investment simulator to improve their decision-making, through individualized feedback. dn.no/staticprojects…

Super excited to share my first WP! Using US admin tax data, I study the changing tax planning architecture of firms that utilized the Double Irish, one of the largest tax loopholes used by US multinational companies, before and after it’s closure. A 🧵! 1/13

For prospective Ph.D. students: Is it a good or bad experience? It depends, but it will probably be both... You need to write at least three papers. Coming up with novel research is hard. If you do something "new", people might tell you it's too exotic.

I'll be giving a webinar on causal inference on Oct 3 -- as a kind of preamble to an online DiD course on Oct 26-27. The webinar probably will run more like 90 minutes. Sign up here: www2.stata-uk.com/Causal-Inferen…

Hi #EconTwitter! What is a standard error? 🧐😆 The "trilogy" of papers on the subject, published in @jeconometrics, is now completed. Check out 👇these contributions by Jeffrey Wooldridge (MSU), Andrew Gelman Andrew Gelman et al. (@columbia) and James Powell (University of Arizona)!

By trawling through the archives and compiling and correcting historical data, this year’s economic sciences laureate Claudia Goldin has been able to present new and often surprising facts. She has also given us a deeper understanding of the factors that affect women’s

📢📢New WP out! 📢📢 *Behavioral responses to wealth taxation: evidence from a Norwegian reform* shorturl.at/lnpsR How do you imagine a 🇳🇴 tax haven? 🧵Thread on the paper below.. (1/6)

Reminder: Using log(x+1) or arcsinh(x) is never coherent, and you probably want Poisson regression instead This paper changed what I do and teach, and it's the rare econometrics paper that's actually clear and accessible. All applied social science researchers should read it!

While you are planning #ASSA2024 Join me & Marie Connolly Canadian Journal of Economics for AEA/The Econometric Society (/CJE) Data Editors' Tutorials. Tutorial 1: Be reproducible and efficient from Day 1, even when data are confidential, a hands-on tutorial: aeaweb.org/conference/202…

For all of those aspiring experimentalists who want to change the world partnering with organizations. Remember, the true cost associated with experiments is not the resource outlays to conduct them, it is the opportunity cost of not having that knowledge.

Representative survey across *125* countries finds that 89% demand more action on climate change, yet they severely underestimate global support for action.. Correcting this pluralistic ignorance could be a powerful tool to spark action on climate change!

Self-employed women underreport their income to the tax authorities more than men do; a new study shows. 'We should perhaps reconsider assumed gender differences in this field,' says NHH Norwegian School of Economics researcher Julie Brun Bjørkheim. bit.ly/436M1NU

Thrilled to share our latest research uncovering that self-employed women may underreport income more than their male counterparts. This challenges long-held beliefs on gender and tax compliance. Excited for the discussions this will spark! #TaxEvasion

This paper has been in the making for so long that eight children across the co-author group were born between the time we started and now! But it is finally out, and you can check it at arxiv.org/pdf/2503.13323

US vs Europe Annual Hours of Sunshine